平年値（旬ごとの値）
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留萌（留萌地方) 平年値（旬ごとの値）
| 要素 | 海面気圧 (hPa) | 降水量 (mm) | 平均気温 (℃) | 日最高気温 (℃) | 日最低気温 (℃) | 相対湿度 (%) | 平均風速 (m/s) | 日照時間 (時) | 全天日射量 (MJ/㎡) | 降雪の深さ合計 (cm) | 最深積雪 (cm) | 雲量 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 統計期間 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2020 | 1991～ 2008 | 1991～ 2020 | 1991～ 2020 | 1991～ 2008 | |
| 資料年数 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 18 | 30 | 30 | 18 | |
| 1月 | 上旬 | 1011.0 | 35.5 | -3.3 | -0.3 | -6.3 | 77 | 6.5 | 10.6 | 3.4 @ | 55 | 51 | 9.3 @ |
| 中旬 | 1014.2 | 29.3 | -4.5 | -1.4 | -7.8 | 77 | 6.1 | 17.3 | 4.3 @ | 51 | 61 | 8.8 @ | |
| 下旬 | 1012.8 | 31.1 | -4.5 | -1.3 | -7.9 | 77 | 6.0 | 20.1 | 4.9 @ | 59 | 72 | 8.9 @ | |
| 2月 | 上旬 | 1012.2 | 25.0 | -4.6 | -1.2 | -8.3 | 75 | 5.9 | 21.6 | 6.2 @ | 49 | 76 | 8.6 @ |
| 中旬 | 1012.9 | 25.0 | -3.5 | -0.6 | -7.0 | 75 | 6.0 | 21.0 | 6.8 @ | 43 | 77 | 8.8 @ | |
| 下旬 | 1015.1 | 18.6 | -2.7 | 0.7 | -6.7 | 74 | 5.6 | 27.2 | 8.9 @ | 28 | 75 | 8.1 @ | |
| 3月 | 上旬 | 1013.3 | 20.7 | -1.9 | 1.3 | -5.5 | 73 | 5.7 | 34.1 | 10.2 @ | 33 | 68 | 7.9 @ |
| 中旬 | 1012.4 | 19.3 | 0.1 | 3.2 | -3.4 | 73 | 5.5 | 39.6 | 11.4 @ | 23 | 62 | 8.2 @ | |
| 下旬 | 1012.3 | 13.6 | 1.6 | 4.9 | -1.9 | 71 | 5.3 | 56.1 | 13.2 @ | 18 | 41 | 7.7 @ | |
| 4月 | 上旬 | 1012.2 | 12.6 | 3.7 | 7.2 | 0.0 | 71 | 5.0 | 56.8 | 15.4 @ | 6 | 17 | 7.1 @ |
| 中旬 | 1011.9 | 15.0 | 5.4 | 9.4 | 1.6 | 72 | 5.0 | 59.4 | 15.8 @ | 2 | 4 | 7.3 @ | |
| 下旬 | 1011.4 | 15.6 | 7.4 | 11.8 | 3.2 | 73 | 4.7 | 58.3 | 16.1 @ | 0 | 0 | 7.2 @ | |
| 5月 | 上旬 | 1010.8 | 23.2 | 9.2 | 13.5 | 5.2 | 74 | 4.6 | 61.4 | 17.7 @ | --- | --- | 7.4 @ |
| 中旬 | 1010.7 | 19.0 | 11.0 | 15.1 | 7.0 | 75 | 4.4 | 64.4 | 18.8 @ | --- | --- | 7.0 @ | |
| 下旬 | 1010.1 | 17.4 | 12.9 | 17.3 | 9.1 | 78 | 4.1 | 75.4 | 19.4 @ | --- | --- | 7.3 @ | |
| 6月 | 上旬 | 1010.4 | 19.4 | 14.0 | 18.0 | 10.7 | 81 | 3.8 | 61.2 | 19.1 @ | --- | --- | 7.4 @ |
| 中旬 | 1008.9 | 19.8 | 15.4 | 19.1 | 12.4 | 83 | 3.5 | 53.7 | 19.3 @ | --- | --- | 7.7 @ | |
| 下旬 | 1007.8 | 17.1 | 16.7 | 20.4 | 13.8 | 83 | 3.4 | 59.1 | 19.9 @ | --- | --- | 7.6 @ | |
| 7月 | 上旬 | 1008.1 | 29.8 | 18.3 | 21.8 | 15.4 | 84 | 3.5 | 56.0 | 18.8 @ | --- | --- | 7.6 @ |
| 中旬 | 1008.3 | 31.6 | 19.3 | 22.9 | 16.4 | 85 | 3.4 | 56.2 | 17.9 @ | --- | --- | 8.2 @ | |
| 下旬 | 1008.7 | 52.4 | 20.9 | 24.6 | 18.1 | 85 | 3.7 | 56.9 | 16.3 @ | --- | --- | 8.3 @ | |
| 8月 | 上旬 | 1009.5 | 39.5 | 21.4 | 24.9 | 18.5 | 84 | 3.6 | 57.8 | 16.6 @ | --- | --- | 7.7 @ |
| 中旬 | 1009.7 | 43.3 | 21.0 | 24.6 | 17.9 | 84 | 3.9 | 52.4 | 16.8 @ | --- | --- | 7.5 @ | |
| 下旬 | 1010.5 | 43.9 | 20.4 | 24.2 | 16.9 | 82 | 4.1 | 64.3 | 16.0 @ | --- | --- | 7.2 @ | |
| 9月 | 上旬 | 1011.4 | 52.0 | 19.4 | 23.4 | 15.6 | 81 | 4.4 | 58.4 | 15.0 @ | --- | --- | 7.1 @ |
| 中旬 | 1013.1 | 48.6 | 17.2 | 21.2 | 13.2 | 79 | 4.6 | 54.2 | 13.1 @ | --- | --- | 7.1 @ | |
| 下旬 | 1015.2 | 44.8 | 15.0 | 19.4 | 10.6 | 78 | 4.9 | 55.0 | 12.2 @ | --- | --- | 6.9 @ | |
| 10月 | 上旬 | 1015.0 | 44.7 | 13.1 | 17.4 | 8.8 | 77 | 5.4 | 46.0 | 10.5 @ | --- | --- | 7.0 @ |
| 中旬 | 1015.5 | 40.5 | 11.1 | 15.1 | 6.8 | 73 | 5.8 | 41.0 | 8.6 @ | --- | --- | 7.2 @ | |
| 下旬 | 1015.6 | 46.3 | 9.3 | 13.2 | 5.2 | 73 | 6.0 | 37.3 | 7.0 @ | 0 | 0 | 7.8 @ | |
| 11月 | 上旬 | 1014.9 | 46.1 | 7.1 | 10.7 | 3.4 | 72 | 6.3 | 23.0 | 5.2 @ | 3 | 2 | 8.2 @ |
| 中旬 | 1015.1 | 49.7 | 4.1 | 7.4 | 0.8 | 75 | 6.3 | 15.8 | 3.8 @ | 11 | 6 | 9.1 @ | |
| 下旬 | 1015.5 | 44.3 | 2.1 | 5.1 | -0.8 | 75 | 6.9 | 13.1 | 3.4 @ | 21 | 11 | 9.0 @ | |
| 12月 | 上旬 | 1014.7 | 38.8 | 0.0 | 2.7 | -2.8 | 75 | 7.1 | 9.2 | 2.9 @ | 36 | 19 | 9.3 @ |
| 中旬 | 1013.4 | 42.0 | -1.8 | 1.1 | -4.6 | 76 | 6.8 | 8.5 | 2.8 @ | 53 | 34 | 9.4 @ | |
| 下旬 | 1012.0 | 39.6 | -2.6 | 0.3 | -5.7 | 78 | 6.6 | 11.9 | 3.2 @ | 58 | 44 | 9.2 @ | |
- 「@」の付いた値は、参考値です。平年差や平年比に利用できません。